<template>
<div class="login_container">
    <!-- 登录表单盒子 -->
    <div class="login_box">
        <div class="avatar_box">
            <img src="../assets/avatar.jpg" alt="">
        </div>
        <!-- 表单区域 -->
        <!-- 验证规则对象 表单数据对象两者中的属性名 必须一致-->
        <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="form_box" label-width="0px">
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
            </el-form-item>
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetForm">重置</el-button>
            </el-form-item>
        </el-form>
    </div>
</div>
</template>

<script>
export default {
    data() {
        return {
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            loginFormRules: {
                username: [{
                        required: true,
                        message: '请输入用户名称',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '长度在 3 到 10 个字符',
                        trigger: 'blur'
                    }
                ],
                password: [{
                        required: true,
                        message: '请输入用户密码',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 6,
                        message: '长度在 3 到 6 个字符',
                        trigger: 'blur'
                    }
                ]
            }
        }
    },
    methods: {
        login() {
            // 获取el-form组件实例 用于调用表单预验证方法
            // this.$refs.loginFormRef
            this.$refs.loginFormRef.validate(async vali => {
                if (!vali) return
                const {
                    data: res
                } = await this.$http.post('login', this.loginForm)
                // console.log(res);
                if (res.meta.status !== 200) {
                    return this.$message.error('登录失败')
                }
                this.$message.success('登录成功')
                // 记录服务器返回的token
                window.sessionStorage.setItem('token', res.data.token)
                // 跳转到home页面
                this.$router.push('/home')
            })
        },
        resetForm() {
            // resetFields
            this.$refs.loginFormRef.resetFields()
        }
    }
};
</script>

<style lang="less" scoped>
.login_container {
    background-color: #2b4b6b;
    height: 100%;

    .login_box {
        width: 450px;
        height: 300px;
        background-color: #fff;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);

        .avatar_box {
            width: 130px;
            height: 130px;
            border: 1px solid #eee;
            box-shadow: 0 0 10px #ddd;
            border-radius: 50%;
            padding: 10px;
            position: absolute;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #fff;

            img {
                width: 100%;
                height: 100%;
                border-radius: 50%;
            }
        }

        .form_box {
            position: absolute;
            bottom: 0;
            width: 100%;
            padding: 0 20px;
            box-sizing: border-box;
        }

        .btns {
            display: flex;
            justify-content: flex-end;
        }
    }
}
</style>
